CN106522841A - Presplit hole drilling method - Google Patents
Presplit hole drilling method Download PDFInfo
- Publication number
- CN106522841A CN106522841A CN201610723626.4A CN201610723626A CN106522841A CN 106522841 A CN106522841 A CN 106522841A CN 201610723626 A CN201610723626 A CN 201610723626A CN 106522841 A CN106522841 A CN 106522841A
- Authority
- CN
- China
- Prior art keywords
- hole
- drilling
- presplit
- angle
- vertical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000007689 inspection Methods 0.000 claims description 3
- 239000011435 rock Substances 0.000 abstract description 5
- 239000002360 explosive Substances 0.000 abstract description 4
- 238000005422 blasting Methods 0.000 description 5
- 230000006378 damage Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 241000894007 species Species 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a presplit hole drilling method. The method comprises the steps that two vertical lines are erected right ahead of the vertical direction of a designed presplit line, the midpoint of a drill rod is aligned, and the azimuth angle of a drilling hole is controlled in a three-point one-line mode; and two shallow holes are drilled behind the presplit hole, supporting vertical columns are placed into the shallow holes, a transverse rod is transversely placed on the vertical columns to support a big arm of a drilling machine, and the big arm of the drilling machine is fixed to the transverse rod, so that the angle of the drill rod on the vertical line is measured and adjusted through a geological compass. By means of the presplit hole drilling method, the angle error of the presplit hole can be controlled within one degree, seismic explosive columns serve as explosives for presplitting, and a formed step is clean in slope surface and clear and flat in outline; the half-hole rate reaches 60% or above in a soft rock area and reaches 90% or above in a hard rock area; the slope surface unevenness degree is smaller than 15 cm; and the desired effect is achieved, and the side slope stability is ensured.
Description
Technical field
The present invention relates to Blasting in open-pit field, specifically a kind of presplitting hole drilling method.
Background technology
Presplit blasting is to excavate border along design to arrange intensive blasthole, is detonated, so as in quick-fried area and guarantor before Zhu Bao areas
Stay, with the bursting work for weakening main explosion to the destruction of reservation rock mass and forming planar profile face.In advance
Ceasma perforation process is the most important link of presplit blasting, at present in terms of pre- ceasma perforation, the rig species that adopted,
Model is otherwise varied, also different on boring method；The 8th Co., Ltd of Engineering Bureau of Chinese Water Conservancy hydro power plant in 2004
To YQ-100B type down-the-hole drills transform, the method for carrying out pre- ceasma perforation by building rig bracket is newest latent
The method of the pre- ceasma operation of drilling machine, but there is rig bracket and build that operating efficiency is low, support destruction rig stands in this method
Force direction and size during bar, reduces rate of penetration and stability.
The content of the invention
Present invention aims to the technical deficiency of the pre- ceasma operation of hidden hole drilling wide-angle, there is provided a kind of presplitting hole drill
Hole method, to solve the pre- ceasma operation of down-the-hole drill, difficulty of construction is big, precision is low, the problem that operating speed is slow.
For achieving the above object, the present invention provides following technical scheme：
A kind of presplitting hole drilling method, comprises the following steps that：
（1）Design presplitting line vertical direction immediately ahead of 5.0m ± 0.1m place and 10m ± 0.1m at respectively erection two 1.7 ±
0.05m high vertical line, is directed at the centre of drilling rod by two vertical lines, using the orientation of the mode keyhole of sight alignment
Angle；
（2）First place is flattened before drilling, the deep shallow bore holes of two 3m ± 0.1m are bored at pre- ceasma rear portion, put support vertical in hole
Post, above column, one cross bar of traverse is used for supporting rig large arm, prevents rig small caused by vibrations because of rig in drilling
Settle and affect dip angle of hole, rig large arm is fixed on cross bar；
（3）Angle of the drilling rod on vertical line is determined and is adjusted using circumferentor.
As further scheme of the invention：The step（2）In, in the range of perforate 1m, 20cm is often crept into drilling rod
Inclination angle is checked that every drill pipe inspection once, is adjusted in time when dip angle of hole is more than 0.5 ° afterwards.
Compared with prior art, the invention has the beneficial effects as follows：
Presplitting hole drilling is carried out with CM351 down-the-hole drills, in practice it has proved that this method can be with controlled blasting orifice angle error at 1 °
Within.Presplit blasting is using explosive-source explosive post as presplitting medication not coefficient of coup 2-3, single hole explosive payload 21kg；Formed after explosion
Bench face cleaning, it is clear-cut smooth, in soft rock region, Half cast factor reaches more than 60%, hard rock region reach 90% with
On, domatic irregularity degree is less than 15cm, has reached Expected Results, it is ensured that side slope is stablized.
Description of the drawings
Fig. 1 is presplitting orifice angle control top view.
Fig. 2 is presplitting orifice angle control front view.
In figure：1- designs presplitting line；2- support bars；3- vertical line positions；4- vertical line position 5- bore positions；6- rigs are bored
Bar；7- ground；8- support bars；9- rig large arm.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
The step of referring to Fig. 1～2, presplitting hole drilling is as follows：
（1）The high vertical lines of two 1.7m are set up respectively at 5m immediately ahead of design presplitting line vertical direction and at 10m, and human eye passes through
Two vertical lines see the centre of drilling rod, using the azimuth of the mode keyhole of sight alignment；
（2）First place is flattened before drilling, the deep shallow bore holes of two 3m are bored at pre- ceasma rear portion, put support post in hole, stood
Above post, one cross bar of traverse is used for supporting rig large arm, can thus prevent rig micro- caused by vibrations because of rig in drilling
It is little sedimentation and affect dip angle of hole, rig large arm is fixed on cross bar；In the range of perforate 1m, often creep into 20cm and drilling rod is inclined
Angle is checked that every drill pipe inspection once, is adjusted in time when dip angle of hole is more than 0.5 ° afterwards；
（3）Angle of the drilling rod on vertical line is determined and is adjusted using circumferentor.
Control accuracy is analyzed：As the height of vertical line is 1.7m, 55 ° of dip angle of hole, then the seen drilling rod positional distance of human eye
Drilling rod is with ground intersection apart from MO=1.7/sin55 °=2.076m.Drill pipe diameter 75mm is 0.075m, and R is the midpoint of ON, OR=
RN=0.0186m。
Drilling rod direction is controlled visually, when vertical line with drill rod axis deviation more than the error to R points（0.0186m）When human eye energy
It is enough discernable.Now orientation angles error is：α=artan（OR/OM）=artan（0.0186/2.076）=0.5°.
Under extreme case, vertical line is with drill rod axis deviation to N points（0.0375mm）When, orientation angles error β now=
artan（ON/OM）= artan(0.0375/2.076)=1°.
As can be seen here, above method can be with control azimuth angle error within 1 °, and error of tilt is surveyed by circumferentor
Amount and timely adjustment control are within 1 °.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, and do not carrying on the back
In the case of the spirit or essential attributes of the present invention, the present invention can be realized in other specific forms.Therefore, no matter from which
From the point of view of a bit, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention will by appended right
Ask rather than described above is limited, it is intended that all changes that will fall in the implication and scope of the equivalency of claim
Include in the present invention.Any reference in claim should not be considered as and limit involved claim.
Claims (2)
1. a kind of presplitting hole drilling method, it is characterised in that comprise the following steps that：
（1）Design presplitting line vertical direction immediately ahead of 5.0m ± 0.1m place and 10m ± 0.1m at respectively erection two 1.7 ±
0.05m high vertical line, is directed at the centre of drilling rod by two vertical lines, using the orientation of the mode keyhole of sight alignment
Angle；
（2）First place is flattened before drilling, the deep shallow bore holes of two 3m ± 0.1m are bored at pre- ceasma rear portion, put support vertical in hole
Post, above column, one cross bar of traverse is used for supporting rig large arm, prevents rig small caused by vibrations because of rig in drilling
Settle and affect dip angle of hole, rig large arm is fixed on cross bar；
（3）Angle of the drilling rod on vertical line is determined and is adjusted using circumferentor.
2. presplitting hole drilling method according to claim 1, it is characterised in that the step（2）In, in perforate 1m scopes
It is interior, often creep into 20cm and drilling rod inclination angle is checked, every drill pipe inspection is once, timely when dip angle of hole is more than 0.5 ° afterwards
Adjustment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610723626.4A CN106522841A (en) | 2016-08-26 | 2016-08-26 | Presplit hole drilling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610723626.4A CN106522841A (en) | 2016-08-26 | 2016-08-26 | Presplit hole drilling method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106522841A true CN106522841A (en) | 2017-03-22 |
Family
ID=58344853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610723626.4A Pending CN106522841A (en) | 2016-08-26 | 2016-08-26 | Presplit hole drilling method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106522841A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110748335A (en) * | 2019-10-09 | 2020-02-04 | 中国葛洲坝集团第一工程有限公司 | Dangerous rock drilling angle control construction method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405309A (en) * | 2014-11-26 | 2015-03-11 | 中国水利水电第六工程局有限公司 | Drill rod positioning device for drilling underwater rockplug blasting presplitting hole |
| CN204311992U (en) * | 2014-11-26 | 2015-05-06 | 中国水利水电第六工程局有限公司 | A kind of drill pipe positioner for underwater rock plug burst presplitting hole drilling |
-
2016
- 2016-08-26 CN CN201610723626.4A patent/CN106522841A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405309A (en) * | 2014-11-26 | 2015-03-11 | 中国水利水电第六工程局有限公司 | Drill rod positioning device for drilling underwater rockplug blasting presplitting hole |
| CN204311992U (en) * | 2014-11-26 | 2015-05-06 | 中国水利水电第六工程局有限公司 | A kind of drill pipe positioner for underwater rock plug burst presplitting hole drilling |
Non-Patent Citations (3)
| Title |
|---|
| 姚尧等: "控制预裂孔钻孔方向的一种有效方法", 《爆破》 * |
| 罗运城等: "高边坡预裂孔施工技术", 《爆破》 * |
| 高秀丽: "控制预裂孔穿孔方向的一种科学方法", 《内蒙古科技与经济》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110748335A (en) * | 2019-10-09 | 2020-02-04 | 中国葛洲坝集团第一工程有限公司 | Dangerous rock drilling angle control construction method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170322 |
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| RJ01 | Rejection of invention patent application after publication |